Mitsubishi Electric MELSEC iQ-R Series User Manual page 144

No. Name
SM154 Invalid power supply module
APPX
142
Appendix 3 List of Special Relay (SM) Areas
Data stored Details
Off: Valid/power-off/no
power supply module
On: Invalid
• This relay is turned on when one or more of
invalid power supply modules are existed.
• This relay is turned on when the factor that
any of 'Details of the invalid power supply
module' (SD154) bits turns on occurs.
• This relay is turned off when all factors that bit
of 'Details of the invalid power supply module'
(SD154) turns on are eliminated.
• This relay is turned off when the main base
unit is not the redundant power supply main
base unit.
Set by (setting timing)
S (Status change)